摘要
农产品加工副产物直接堆砌会造成严重的环境污染问题,该研究采用单因素优化方法阐明了农产品加工副产物米糠、稻壳、麦麸和酒糟作为水体农药三唑酮污染修复剂的潜质。结果表明,米糠对三唑酮的去除效果最好,稻壳最不适合作为三唑酮去除剂。其中,材料质量和粒径是影响三唑酮去除率的最重要因素,米糠去除水体三唑酮的最优条件为粒径60目、质量5 g、处理温度40℃、处理时间5 min。改变材料质量会显著影响材料对水体三唑酮的吸附容量,通过等温吸附建模发现,30℃时,改变材料质量仅有酒糟处理组同时符合Langmuir和Freundlich模型,其他3种材料应用Freundlich模拟效果更好,说明吸附过程属于多分子层的非均质吸附。除7 g米糠处理组外均未观察到三唑酮对映体的选择性去除作用,但从等温吸附建模来看,4种材料对S-(+)-三唑酮吸附潜力更高。该研究结果可为低成本农产品加工副产物修复水体三唑酮污染提供一定的理论依据。
The direct stacking of agro-processing by-products will cause serious environmental pollution.This study applied the single factor optimization method to clarify the potential of agro-processing by-products rice bran,rice husk,wheat bran,and distillers′grains as water pesticide triadimefon pollution remediation agents.Results showed that rice bran had the best effect on the removal of triadimefon,and rice husk was the least suitable as a triadimefon remover.Among them,material mass and particle size were the most important factors affecting the removal rate of triadimefon.The optimal conditions for removing triadimefon from water by rice bran were particle size 60 mesh,mass 5 g,treatment temperature 40℃,and time 5 min.The change of material mass significantly affected the adsorption capacity of triadimefon to substances in water.Through the isothermal adsorption modeling,it was found that only the distillers′grains group conformed to both Langmuir and Freundlich models at 30℃by changing the material mass.The simulation effect of Freundlich for the other three materials was better,indicating that the adsorption process belonged to the heterogeneous adsorption of multi-molecular layers.No enantioselective removal of triadimefon was observed except for the 7 g rice bran-treated group.However,from the isothermal adsorption modeling,the four materials had higher adsorption potential for S-(+)-triadimefon.The results can provide a theoretical basis for the remediation of triadimefon pollution using low-cost agro-processing by-products.
作者
刘卉
单梅
宋嘉啟
李佳旭
王瀚婷
李永烨
LIU Hui;SHAN Mei;SONG Jiaqi;LI Jiaxu;WANG Hanting;LI Yongye(Department of Pesticide,College of Plant Protection,Northeast Agricultural University,Harbin 150030,China)
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2023年第14期138-146,共9页
Food and Fermentation Industries
基金
黑龙江省大学生创新创业训练计划项目(S202110224091)。
关键词
农产品加工副产物
水体
三唑酮
手性
去除作用
agro-processing by-products
water
triadimefon
chirality
removal effect
